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Measurement E8M22

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Experiment: E89-038 CLAS experiment, 1999

Spokespersons: V. Burkert, R. Minehart

Experiment comment: Beam energy 1.515 GeV. Global 5.8% scaling systematic uncertainty for all data points

Measurement comment: Global 5.8% scaling systematic uncertainty

Publication:

Quantity measured: dσ/dΩ, mcbn/sterad
Differential cross section.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: π+n, polarization: none

Q2 : 0.25 — 0.35 GeV2
W : 1.52 — 1.54 GeV
Ebeam : 1.515 GeV

Select data slice:
θπ = deg

Fit φ dependence:

 Observable quantity measured (Y axis): dσ/dΩ, mcbn/sterad
Plot measurement data

Parameter (X axis): φπ, deg

Click here to get data in text file, delimited with tabs.

Click here to get calculated fit coefficients in text file, delimited with tabs.

Measured data:

θπ,
deg 		φπ,
deg 		dσ/dΩ,
mcbn/sterad 		Data errors,
mcbn/sterad 		Systematic errors,
mcbn/sterad
7.5 15 15.83 2.211 1.725
7.5 45 15.83 3.01 1.764
7.5 75 21.4 2.823 1.78
7.5 105 11.53 1.255 1.695
7.5 135 9.597 0.8163 1.665
7.5 165 12.27 0.9978 1.706
7.5 195 9.762 0.8494 1.672
7.5 225 10.49 0.9424 1.672
7.5 255 13.16 1.665 1.697
7.5 285 11.47 1.806 1.675
7.5 315 23.29 5.729 1.924
7.5 345 16.83 2.301 1.748
22.5 75 6.988 1.154 0.6804
22.5 105 8.733 2.448 0.7034
22.5 135 8.039 0.7381 0.7096
22.5 165 5.588 0.373 0.654
22.5 195 6.647 0.4284 0.6773
22.5 225 7.566 0.7068 0.6912
22.5 255 11.17 2.375 0.7623
22.5 285 8.248 1.617 0.7132
37.5 75 7.19 0.3227 0.5112
37.5 105 6.075 0.4273 0.4832
37.5 135 6.519 0.8066 0.501
37.5 165 4.094 0.5295 0.4575
37.5 195 5.58 0.8504 0.4638
37.5 225 6.738 0.8695 0.5198
37.5 255 7.293 0.4682 0.5143
37.5 285 7.083 0.3069 0.5084
52.5 45 2.954 0.3517 0.3267
52.5 75 5.061 0.3186 0.3865
52.5 285 4.932 0.2834 0.3777
52.5 315 4.585 0.5975 0.3634
67.5 15 2.098 0.9529 0.2192
67.5 45 3.092 0.2111 0.235
67.5 75 3.531 0.4623 0.2755
67.5 105 3.87 0.4631 0.2628
67.5 135 2.856 0.2131 0.2351
67.5 165 1.963 0.122 0.2193
67.5 195 1.955 0.126 0.2208
67.5 225 2.935 0.21 0.2442
67.5 255 3.42 0.2726 0.2745
67.5 315 2.565 0.1839 0.2279
67.5 345 1.235 0.3526 0.2009
82.5 15 1.301 0.578 0.2195
82.5 45 2.42 0.5262 0.2322
82.5 75 3.827 0.3994 0.2704
82.5 105 3.463 0.1641 0.2706
82.5 135 2.723 0.1868 0.2525
82.5 165 1.538 0.1039 0.2291
82.5 195 1.664 0.1125 0.2258
82.5 225 2.452 0.1837 0.2472
82.5 255 3.563 0.1619 0.269
82.5 285 3.897 0.3739 0.2814
82.5 315 2.217 0.4129 0.2311
82.5 345 1.143 0.5378 0.2193
97.5 15 1.228 0.1623 0.1847
97.5 45 2.569 0.1581 0.2176
97.5 75 3.628 0.2503 0.2546
97.5 105 3.743 0.1815 0.2564
97.5 135 2.827 0.2069 0.23
97.5 165 1.601 0.1591 0.1954
97.5 195 1.842 0.1628 0.2015
97.5 225 2.762 0.2105 0.2234
97.5 255 3.777 0.1861 0.258
97.5 285 3.862 0.2599 0.2541
97.5 315 2.52 0.1602 0.2071
97.5 345 1.131 0.1451 0.1813
112.5 15 1.462 0.1931 0.1966
112.5 45 3.043 0.2268 0.2254
112.5 75 3.849 0.2618 0.2576
112.5 105 3.928 0.2281 0.2663
112.5 135 3.021 0.2122 0.2326
112.5 165 1.61 0.1344 0.2122
112.5 195 1.596 0.1294 0.2043
112.5 225 2.712 0.1818 0.2311
112.5 255 4.051 0.2134 0.2782
112.5 285 3.551 0.2602 0.2515
112.5 315 2.403 0.1864 0.2175
112.5 345 1.677 0.1924 0.1969
127.5 15 1.626 0.1676 0.1809
127.5 45 2.678 0.2484 0.2116
127.5 75 3.125 0.219 0.2223
127.5 105 3.281 0.2871 0.221
127.5 135 2.523 0.2417 0.2139
127.5 165 1.803 0.6152 0.181
127.5 195 2.121 0.3936 0.2243
127.5 225 2.866 0.4424 0.2077
127.5 255 3.238 0.241 0.2274
127.5 285 3.493 0.2794 0.2358
127.5 315 2.456 0.2639 0.1989
127.5 345 1.534 0.1755 0.1752
142.5 15 1.582 0.1965 0.2041
142.5 45 2.262 0.2474 0.2225
142.5 75 2.725 0.253 0.2368
142.5 105 2.756 0.7525 0.219
142.5 135 2.342 0.4329 0.2218
142.5 255 3.277 0.8339 0.2489
142.5 285 2.929 0.2774 0.2352
142.5 315 2.027 0.3165 0.216
142.5 345 1.261 0.1408 0.2073
157.5 15 1.965 0.5154 0.08297
157.5 345 0.8838 0.1951 0.09116